Brembo 4KD.8039A GT Series 4-Piston Big Brake Kit with 355x32mm 2-Piece Rotors

The Brembo 4KD.8039A is a complete GT Series front big brake upgrade kit featuring 4-piston cast radial mount calipers paired with 355x32mm (14") 2-piece disc assemblies. Engineered for drivers who demand superior stopping power on both the street and the track, this kit delivers the legendary Brembo GT performance in a fully pre-assembled, complete axle set.

Caliper Specifications:

• Caliper body: Cast 2-piece radial mount design
• Piston configuration: 4-piston with sequentially sized pistons
• Caliper piston design: Inner pressure seal with stainless steel insert
• Designed to be compatible with OEM ABS and traction control systems

Disc/Rotor Specifications:

• Disc diameter: 355mm (14")
• Disc width: 32mm
• Construction: 2-piece disc assembly with floating D-bobbin and anti-rattle spring
• Material: Advanced high carbon alloy with corrosion-resistant plating
• Vane design: Vented curved vane configuration for improved thermal management

Kit Contents:

• Complete axle set — left and right side components included
• Pre-assembled calipers and disc assemblies
• Brembo high-performance brake pads
• Proprietary Brembo stainless steel braided brake lines by Goodridge
• Brembo engineered CNC billet caliper adapters
• All necessary mounting hardware for installation

The Brembo GT Series is designed and tested for track day enthusiasts and performance-focused drivers. The vented disc design improves cooling capacity and increases resistance to thermal shock cracking. This system is fully pre-assembled for streamlined installation and is intended for front axle use.